Explore topic-wise MCQs in Thermodynamics.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

At very low pressures Z approaches

A. zero
B. unity
C. 0.50
D. infinity
Answer» C. 0.50
Discussion
2.

The value of compressibility factor at the critical state for a van der Waals gas is

A. 0.325
B. 0.350
C. 0.375
D. 0.400
Answer» D. 0.400
Discussion
3.

The corrected gas equation is a cubic in v, which of the following statement is true about its roots?

A. at low temperature, three positive real roots exists
B. at critical temperature, the three real roots become equal
C. at high temperature, only one real root exists
D. all of the mentioned
Answer» E.
Discussion
4.

The law of corresponding states is a relation among

A. reduced pressure and reduced temperature
B. reduced volume and reduced temperature
C. reduced volume and reduced pressure
D. reduced pressure and reduced temperature and reduced volume
Answer» E.
Discussion
5.

THE_CORRECTED_GAS_EQUATION_IS_A_CUBIC_IN_V,_WHICH_OF_THE_FOLLOWING_STATEMENT_IS_TRUE_ABOUT_ITS_ROOTS??$

A. at low temperature, three positive real roots exists
B. at critical temperature, the three real roots become equal
C. at high temperature, only one real root exists
D. all of the mentioned
Answer» E.
Discussion
6.

At very low pressures Z approaches$

A. zero
B. unity
C. 0.50
D. infinity
Answer» C. 0.50
Discussion
7.

The_value_of_compressibility_factor_at_the_critical_state_for_a_van_der_Waals_gas_is$

A. 0.325
B. 0.350
C. 0.375
D. 0.400
Answer» D. 0.400
Discussion
8.

The Boyle temperature is given by

A. a/(b*R)
B. b/(a*R)
C. R/(a*b)
D. 1/(a*b*R)
Answer» B. b/(a*R)
Discussion
9.

Which of the following statement is true about the reduced equation of state?

A. the individual coefficients a,b,R for a particular gas have disappeared
B. it reduces the properties of all gases to one formula
C. it tells us that to what extent a real gas obeys van der Waals equation
D. all of the mentioned
Answer» E.
Discussion
10.

The law of corresponding states is a relation amon?

A. reduced pressure and reduced temperature
B. reduced volume and reduced temperature
C. reduced volume and reduced pressure
D. reduced pressure and reduced temperature and reduced volume
Answer» E.
Discussion
11.

The generalized compressibility chart is a plot in

A. when reduced pressure is plotted as a function of reduced temperature and Z
B. when reduced temperature is plotted as a function of reduced pressure and Z
C. when Z is plotted as a function of reduced pressure and reduced temperature
D. none of the mentioned
Answer» C. when Z is plotted as a function of reduced pressure and reduced temperature
Discussion
12.

Value of critical compressibility factor Zc is taken to be constant.

A. true
B. false
Answer» B. false
Discussion
13.

Which of the following property is used as the dimensionless property?

A. reduced pressure
B. reduced volume
C. reduced temperature
D. all of the mentioned
Answer» E.
Discussion
14.

How could we use one compressibility factor chart for all the substances?

A. it would be more convenient
B. the general shapes of the vapour dome and of the constant temperature lines on the p-v plane can be similar for all substances
C. their similarity can be exploited using dimensionless properties
D. all of the mentioned
Answer» E.
Discussion
15.

We can use Z instead of directly plotting v.

A. true
B. false
Answer» B. false
Discussion
16.

For a gas, the compressibility factor Z depends on

A. pressure and volume
B. pressure and temperature
C. volume and temperature
D. pressure, volume and temperature
Answer» C. volume and temperature
Discussion